AINewsnow

Claude Opus 5.5 can now rebuild real programs from scratch — 18.5% on ProgramBench, up from 0% in May

According to Jack Clark's Import AI (Oct 26), Claude Opus 5.5 (xhigh) now resolves 18.5% of ProgramBench's 200 from-scratch rebuild tasks — rewriting programs like SQLite, FFmpeg and ripgrep from a compiled binary and its docs. That is up from 0% when every model failed at the benchmark's May launc…

Read the full story at r/artificial ↗

Timeline · 1 report

  1. 2026-10-28 01:46 · r/artificial
    Claude Opus 5.5 can now rebuild real programs from scratch — 18.5% on ProgramBench, up from 0% in May

More stories

  1. Anthropic reveals plans for blockbuster IPO — Sky News Technology
  2. I built an Android app where Claude Code, Codex or OpenCode use your phone through MCP (open source) — r/ArtificialInteligence
  3. Frontier AI labs say their models refuted the Exponential Time Hypothesis. What does that mean? — TechCrunch AI
  4. Anthropic's IPO filing shows soaring sales and steep losses — France 24 — Artificial Intelligence
  5. How Anthropic ships the #1 LLM in the World safely: Separating the Brain from the Hands — Latent Space
  6. Meta announces $95B offering to fund AI — Semafor Technology
  7. Anthropic's Claude bypassed a paywall to access Georgia voter data without authorization — Axios AI+
  8. FTC demands Anthropic leaders testify in consumer harm investigation — The Hill Technology

Get the daily brief of stories like this at 6:30 every morning →